CN108196261A - A kind of quick high accuracy range-measurement system - Google Patents
A kind of quick high accuracy range-measurement system Download PDFInfo
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- CN108196261A CN108196261A CN201711291913.3A CN201711291913A CN108196261A CN 108196261 A CN108196261 A CN 108196261A CN 201711291913 A CN201711291913 A CN 201711291913A CN 108196261 A CN108196261 A CN 108196261A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
A kind of quick high accuracy range-measurement system, is related to field of measuring technique；Including microcontroller, switching switch, laser, auxiliary receiver module and main receiver module；Switching switch is controlled to switch over external differential wave by microcontroller；Mathematic interpolation is carried out to the delay phase difference of auxiliary receiver module and main receiver module first, obtains two receiver modules, itself existing phase-interpolation；External main shake signal and time signal are then accessed by switching switch, complete the correction to double reception systematic error phase；Correction finishes switching and opens emission system, realizes the measurement to reference path and optical path and simultaneously phase demodulation, realizes the measurement apart from real-time.The present invention switches without mechanical device, lossless, long lifespan；The correction of starting up improves measurement accuracy, and telemeasurement reaches millimeter magnitude, and double reception improves measuring speed.
Description
Technical field
The present invention relates to a kind of field of measuring technique, particularly a kind of quick high accuracy range-measurement system.
Background technology
Laser ranging extensive use, common measuring method include two methods of pulse timing and detection phase.Arteries and veins
Be punched at a high speed and long range measurements have very big advantage, and phase-detection method in terms of short distance and high-precision have it is very big
Advantage.As its name suggests, the method for phase-detection ranging obtains measurement accuracy to sacrifice the time, from the angle of transmitter and receiver
Phase type mensuration is divided into following a few major class：Single-shot (transmitter), which singly receives (receiver), double bills are received and double hairs are double receives.Single-shot
Single receive realizes that high-acruracy survey needs to switch using mechanical device, and time of measuring is long, and with mechanical loss, double bills, which are received, to be needed
Emitting laser is toggled, extends time of measuring, and radiating circuit is different, caused delay can not be calibrated effectively,
Precision can not effectively improve；With the double theoretical precision highests received of double hairs, but measurement period is long, can not be efficiently applied to quick high-precision
Spend occasion.
Invention content
It is an object of the invention to overcome the above-mentioned deficiency of the prior art, a kind of quick high accuracy range-measurement system is provided, is carried
The high speed and precision of range-measurement system.
The above-mentioned purpose of the present invention is achieved by following technical solution：
A kind of quick high accuracy range-measurement system, including microcontroller, switching switch, laser, auxiliary receiver module and master
Receiver module；
Microcontroller：Control switching switch carries out receiving signal switching；Receive that auxiliary receiver module transmits connects containing auxiliary
Receive the differential wave of device module phase delay information；Receive that main receiver module transmits contains main receiver module phase delay
The differential wave of information；Calculate the auxiliary differential signal of receiver module phase delay and the main differential signal of receiver module phase delay
Difference, and differential wave phase delay difference is stored；Control switching switch carries out receiving signal switching；Receive auxiliary connect
Receive the auxiliary mixed frequency signal that module transmits；Receive the main mixed frequency signal that main receiving module transmits；Calculate auxiliary mixed frequency signal and main mixing
The phase delay difference of signal；The phase delay difference of auxiliary mixed frequency signal and main mixed frequency signal is subtracted into differential wave phase delay
Difference is to get to accurate target distance to be measured；
Switching switch：Under the control of the micro-controller, switching receives signal, receives external differential wave；And by difference
Dynamic signal is transmitted separately to auxiliary receiver module and main receiving module；Under the control of the micro-controller, switching receives signal, receives
Main signal and time signal of shaking in outside；The main signal that shakes is sent to laser；By secondary signal be respectively sent to auxiliary receiver module and
Main receiver module；
Auxiliary receiver module：Receive the differential wave that switching switch transmits；The phase delay of auxiliary receiver module is believed
It ceases in the differential wave being attached to, differential wave of the generation containing auxiliary receiver module phase delay information, and auxiliary connect will be contained
The differential wave for receiving device module phase delay information is sent to microcontroller；Receive the secondary signal that switching switch transmits；It receives and swashs
The reference laser light light beam that light device transmits；Reference laser light light beam is converted to the telecommunications for including default artificial setting reference distance phase
Number；And electric signal and time signal are subjected to Frequency mixing processing, the auxiliary mixed frequency signal of generation, by auxiliary mixed frequency signal be sent to microcontroller
Device；
Main receiver module：Receive the differential wave that switching switch transmits；The phase delay of main receiver module is believed
It ceases in the differential wave being attached to, differential wave of the generation containing main receiver module phase delay information, and master will be contained and connect
The differential wave for receiving device module phase delay information is sent to microcontroller；Receive the secondary signal that switching switch transmits；It receives outer
The laser measurement light beam of portion's target reflection to be measured；Laser measurement light beam is converted to comprising telecommunications target to be measured apart from phase
Number；And electric signal and time signal are subjected to Frequency mixing processing, the main mixed frequency signal of generation, by main mixed frequency signal be sent to microcontroller
Device；
Laser：It receives the master transmitted of switching switch to shake signal, laser measurement light beam is sent out to external target to be measured, through anti-
After penetrating, laser measurement beam Propagation to main receiver module；Reference laser light light beam is sent out to auxiliary receiver module.
In a kind of above-mentioned quick high accuracy range-measurement system, the frequency of the differential wave is 10KHz.
In a kind of above-mentioned quick high accuracy range-measurement system, the frequency of the auxiliary mixed frequency signal and main mixed frequency signal is
10KHz。
The present invention has the following advantages that compared with prior art：
(1) present invention employs switching switch, the switching of complete pair of differential signals, secondary signal and the main signal that shakes is realized
Compensation to system phase delay itself improves the ranging measurement accuracy of system；
(2) present invention employs main receiver modules and auxiliary receiver module, and reference beam and measuring beam are connect parallel
It receives and handles, compared with serial process, measuring speed improves one times；
(3) present invention employs main receiver modules and auxiliary receiver module, and reference beam and measuring beam are connect parallel
It receives and handles, compared with serial process, measuring speed improves one times；
(4) present invention employs micro controller module, control to switching switch and main receiver module and auxiliary are realized
Receiving module sends the processing of signal, and the phase delay of differential wave is calculated.Control is rolled into one with calculating, is simplified
Circuit structure.
Description of the drawings
Fig. 1 is precision distance measurement system block diagram of the present invention.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments：
Range-measurement system is including the emitter to emission measurement light beam and reference beam and to receive reference beam
It further includes one kind with the double reception device of measuring beam and subsequent filter and amplification and phase discriminator, the range-measurement system and cuts
Switching circuit is changed, closes emission system in start process, is completed by switch switching circuit to double reception systematic error phase
Correction；Correction finishes switching and opens emission system, realizes the measurement to reference path and optical path and simultaneously phase demodulation,
Realize the measurement apart from real-time.The present invention switches without mechanical device, lossless, long lifespan；The correction of starting up
Measurement accuracy is improved, telemeasurement reaches millimeter magnitude, and double reception improves measuring speed.
Fig. 1 is precision distance measurement system block diagram, as seen from the figure, a kind of quick high accuracy range-measurement system, it is characterised in that：Packet
Include microcontroller, switching switch, laser, auxiliary receiver module and main receiver module；
Microcontroller：Control switching switch carries out receiving signal switching；Receive that auxiliary receiver module transmits connects containing auxiliary
Receive the differential wave of the 10KHz of device module phase delay information；Receive that main receiver module transmits contains main receiver module
The 10KHz differential waves of phase delay information；Calculate the differential wave of auxiliary receiver module phase delay 10KHz and main receiver
The difference of the differential wave of module phase delay 10KHz, and the differential wave phase delay difference of 10KHz is stored；Control
Switching switch processed carries out receiving signal switching；Receive the auxiliary mixed frequency signal for the 10KHz that auxiliary receiving module transmits；Receive main reception mould
The main mixed frequency signal for the 10KHz that block transmits；Calculate the phase delay of the auxiliary mixed frequency signal of 10KHz and the main mixed frequency signal of 10KHz
Difference；The phase delay difference of the auxiliary mixed frequency signal of 10KHz and the main mixed frequency signal of 10KHz is subtracted to the differential wave of 10KHz
Phase delay difference is to get to accurate target distance to be measured；
Switching switch：Under the control of the micro-controller, switching receives signal, receives the differential wave of external 10KHz；And
By the differential wave of 10KHz be transmitted separately to auxiliary receiver module and main receiving module；Under the control of the micro-controller, switch
Signal is received, receives external main signal and time signal of shaking；The main signal that shakes is sent to laser；Secondary signal is respectively sent to auxiliary
Receiver module and main receiver module；
Auxiliary receiver module：Receive the differential wave of 10KHz that switching switch transmits；By the phase of auxiliary receiver module
In the differential wave of 10KHz that delay information is attached to, the difference of 10KHz of the generation containing auxiliary receiver module phase delay information
Dynamic signal, and the differential wave of the 10KHz containing auxiliary receiver module phase delay information is sent to microcontroller；Reception is cut
Change the secondary signal that switch transmits；Receive the reference laser light light beam that laser transmits；Reference laser light light beam is converted to comprising default
The electric signal of artificial setting reference distance phase；And electric signal and time signal are subjected to Frequency mixing processing, the 10KHz's of generation is auxiliary mixed
Frequency signal, by the auxiliary mixed frequency signal of 10KHz be sent to microcontroller；
Main receiver module：Receive the differential wave of 10KHz that switching switch transmits；By the phase of main receiver module
In the differential wave of 10KHz that delay information is attached to, the difference of 10KHz of the generation containing main receiver module phase delay information
Dynamic signal, and the differential wave of the 10KHz containing main receiver module phase delay information is sent to microcontroller；Reception is cut
Change the secondary signal that switch transmits；Receive the laser measurement light beam of external target reflection to be measured；Laser measurement light beam is converted into packet
Electric signal containing target to be measured apart from phase；And electric signal and time signal are subjected to Frequency mixing processing, the main mixing of the 10KHz of generation
Signal, by the main mixed frequency signal of 10KHz be sent to microcontroller；
Laser：It receives the master transmitted of switching switch to shake signal, laser measurement light beam is sent out to external target to be measured, through anti-
After penetrating, laser measurement beam Propagation to main receiver module；Reference laser light light beam is sent out to auxiliary receiver module.
It is emission source that range-measurement system, which is included to the laser for emitting light beam, and by spectroscope, transmitting light beam is divided into ginseng
Examine light beam and measuring beam；Furthermore, range-measurement system provided by the invention, major-minor receiving circuit system are joined to receive
It examines and measuring beam, the two under same frequency, is inevitably present phase shift due to characteristic and the otherness of circuit etc.
Difference, for this purpose, switching switch is realized by way of opening laser and switching local oscillation frequency signal to main receiver module
With the phasing of auxiliary receiver module.
It is had corrected that in power-up initializing, therefore, the phase error as caused by systematical difference can be calibrated effectively, be improved
Measurement accuracy.It need not be calibrated again after opening the calibration for starting initialization, the present invention realizes reference path and measures access
It measures simultaneously, effective raising measuring speed.Therefore, measuring system provided by the invention can meet high-precision high-speed survey simultaneously
The requirement of amount.
The content not being described in detail in description of the invention belongs to the known technology of those skilled in the art.
Claims (4)
1. a kind of quick high accuracy range-measurement system, it is characterised in that：Including microcontroller, switching switch, laser, auxiliary receiver
Module and main receiver module；
Microcontroller：Control switching switch carries out receiving signal switching；Receive that auxiliary receiver module transmits contains auxiliary receiver
The differential wave of module phase delay information；Receive that main receiver module transmits contains main receiver module phase delay information
Differential wave；Calculate the difference of the auxiliary differential signal of receiver module phase delay and the main differential signal of receiver module phase delay
Value, and differential wave phase delay difference is stored；Control switching switch carries out receiving signal switching；Receive auxiliary reception mould
The auxiliary mixed frequency signal that block transmits；Receive the main mixed frequency signal that main receiving module transmits；Calculate auxiliary mixed frequency signal and main mixed frequency signal
Phase delay difference；The phase delay difference of auxiliary mixed frequency signal and main mixed frequency signal is subtracted into differential wave phase-delay difference
Value is to get to accurate target distance to be measured；
Switching switch：Under the control of the micro-controller, switching receives signal, receives external differential wave；And by differential letter
Number it is transmitted separately to auxiliary receiver module and main receiving module；Under the control of the micro-controller, switching receives signal, receives external
Main signal and time signal of shaking；The main signal that shakes is sent to laser；Secondary signal is respectively sent to auxiliary receiver module and master connects
Receive device module；
Auxiliary receiver module：Receive the differential wave that switching switch transmits；The phase delay information of auxiliary receiver module is attached
In the differential wave being added in, differential wave of the generation containing auxiliary receiver module phase delay information, and auxiliary receiver will be contained
The differential wave of module phase delay information is sent to microcontroller；Receive the secondary signal that switching switch transmits；Receive laser
The reference laser light light beam transmitted；Reference laser light light beam is converted to the electric signal for including default artificial setting reference distance phase；
And electric signal and time signal are subjected to Frequency mixing processing, the auxiliary mixed frequency signal of generation, by auxiliary mixed frequency signal be sent to microcontroller；
Main receiver module：Receive the differential wave that switching switch transmits；The phase delay information of main receiver module is attached
In the differential wave being added in, differential wave of the generation containing main receiver module phase delay information, and main receiver will be contained
The differential wave of module phase delay information is sent to microcontroller；Receive the secondary signal that switching switch transmits；Receive external treat
Survey the laser measurement light beam of target reflection；Laser measurement light beam is converted to comprising electric signal target to be measured apart from phase；And
Electric signal and time signal are subjected to Frequency mixing processing, the main mixed frequency signal of generation, by main mixed frequency signal be sent to microcontroller；
Laser：It receives the master transmitted of switching switch to shake signal, laser measurement light beam is sent out to external target to be measured, through reflection
Afterwards, laser measurement beam Propagation is to main receiver module；Reference laser light light beam is sent out to auxiliary receiver module.
2. a kind of quick high accuracy range-measurement system according to claim 1, it is characterised in that：The frequency of the differential wave
Rate is 10KHz.
3. a kind of quick high accuracy range-measurement system according to claim 2, it is characterised in that：The auxiliary mixed frequency signal and
The frequency of main mixed frequency signal is 10KHz.
4. a kind of quick high accuracy range-measurement system according to claim 3, it is characterised in that：It is set inside the laser
There is spectroscope, realize and transmitting laser is divided into laser measurement light beam and reference laser light light beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711291913.3A CN108196261B (en) | 2017-12-08 | 2017-12-08 | Quick high accuracy ranging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711291913.3A CN108196261B (en) | 2017-12-08 | 2017-12-08 | Quick high accuracy ranging system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108196261A true CN108196261A (en) | 2018-06-22 |
| CN108196261B CN108196261B (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711291913.3A Active CN108196261B (en) | 2017-12-08 | 2017-12-08 | Quick high accuracy ranging system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112099036A (en) * | 2020-11-10 | 2020-12-18 | 深圳市汇顶科技股份有限公司 | Distance measuring method and electronic device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013026680A1 (en) * | 2011-08-25 | 2013-02-28 | Ifm Electronic Gmbh | Receiver for an optical distance measuring device |
| CN104459710A (en) * | 2013-09-25 | 2015-03-25 | 北京航天计量测试技术研究所 | Pulse/phase integrated laser range finder |
| CN104706336A (en) * | 2014-12-31 | 2015-06-17 | 歌尔声学股份有限公司 | Photoelectric pulse signal measuring method, device and measuring equipment |
| CN105824028A (en) * | 2016-03-22 | 2016-08-03 | 深圳市威睿晶科电子有限公司 | Laser phase range finding method |
| CN106597458A (en) * | 2016-11-22 | 2017-04-26 | 北京遥测技术研究所 | Laser ranging system and method for self compensating optical power based on APD |
-
2017
- 2017-12-08 CN CN201711291913.3A patent/CN108196261B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013026680A1 (en) * | 2011-08-25 | 2013-02-28 | Ifm Electronic Gmbh | Receiver for an optical distance measuring device |
| CN104459710A (en) * | 2013-09-25 | 2015-03-25 | 北京航天计量测试技术研究所 | Pulse/phase integrated laser range finder |
| CN104706336A (en) * | 2014-12-31 | 2015-06-17 | 歌尔声学股份有限公司 | Photoelectric pulse signal measuring method, device and measuring equipment |
| CN105824028A (en) * | 2016-03-22 | 2016-08-03 | 深圳市威睿晶科电子有限公司 | Laser phase range finding method |
| CN106597458A (en) * | 2016-11-22 | 2017-04-26 | 北京遥测技术研究所 | Laser ranging system and method for self compensating optical power based on APD |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112099036A (en) * | 2020-11-10 | 2020-12-18 | 深圳市汇顶科技股份有限公司 | Distance measuring method and electronic device |
| CN112099036B (en) * | 2020-11-10 | 2021-03-23 | 深圳市汇顶科技股份有限公司 | Distance measuring method and electronic device |
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| CN108196261B (en) | 2020-04-10 |
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